New to the show but why doesn’t Homelander just kill The Boys?

Recently watched all 4 seasons and Gen V. Is there any reason why Homelander just doesn’t killed Huey, Butcher, etc? They lost their anonymity in the first season and Homelander doesn’t care about the airplane blackmail video. He’s also just crazy to do whatever the writers want to escalate the plot. So why doesn’t he just kill the main characters? Did he have to take over the government and build concentration camp just to get a handful of people?

Maybe I’m media illiterate or I forgot something but it feels like Kripke and his team just wanted that Amazon $$$ after a certain point lol.